I had almost constant nightmares until I was about seven. Some of them are super ridiculous in retrospect (one involved a giant anthropomorphic sneaker hopping down my street and I was terrified of it) and some of them are actually still pretty horrifying (one involved being in a room of people and then gunmen burst in and killed everyone, and I survived because I fell behind a crate, but they started going through the room to check for survivors...). As a result of this, even when I have horrible dreams now I'm unable to think of them as nightmares, because they don't hit the same level of unhinged terror that the dreams I had as a kid did, no matter how gory or awful they get. Everything now is just "great my brain is being awful to me again".
On a lighter note, probably the weirdest recent dream I had was one that involved another fanfiction episode of the f plus, and the terrible fanfiction my brain came up to be read on the podcast was a weird erotic muppets fanfic where everyone but kermit was dead and he went to a wizard to revive them. I am still slightly terrified that either (a) someone has already written this fanfic or (b) this means it's become my duty to write it because of mysterious and horrible ancient dream-laws.